Example usage for com.google.common.base Optional isPresent

List of usage examples for com.google.common.base Optional isPresent

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Introduction

In this page you can find the example usage for com.google.common.base Optional isPresent.

Prototype

public abstract boolean isPresent();

Source Link

Document

Returns true if this holder contains a (non-null) instance.

Usage

From source file:org.onos.yangtools.yang.model.util.repo.SourceIdentifier.java

/**
 * Returns filename for this YANG module as specified in RFC 6020.
 *
 * Returns filename in format//w w  w.ja  va2s  .  c o  m
 * <code>moduleName ['@' revision] '.yang'</code>
 *
 * Where Where revision-date is in format YYYY-mm-dd.
 *
 * <p>
 * See
 * http://tools.ietf.org/html/rfc6020#section-5.2
 *
 * @return Filename for this source identifier.
 */
public static final String toYangFileName(final String moduleName, final Optional<String> revision) {
    StringBuilder filename = new StringBuilder(moduleName);
    if (revision.isPresent()) {
        filename.append("@");
        filename.append(revision.get());
    }
    filename.append(".yang");
    return filename.toString();
}

From source file:org.anhonesteffort.flock.crypto.KeyHelper.java

public static void importSaltAndEncryptedKeyMaterial(Context context, String[] saltAndEncryptedKeyMaterial)
        throws GeneralSecurityException, InvalidMacException, IOException {
    Log.d(TAG, "IMPORTING ENCRYPTED KEY MATERIAL!");

    Optional<String> masterPassphrase = KeyStore.getMasterPassphrase(context);
    if (!masterPassphrase.isPresent())
        throw new InvalidMacException("Passphrase unavailable.");

    byte[] salt = Base64.decode(saltAndEncryptedKeyMaterial[0]);
    SecretKey[] masterKeys = KeyUtil.getCipherAndMacKeysForPassphrase(salt, masterPassphrase.get());
    SecretKey masterCipherKey = masterKeys[0];
    SecretKey masterMacKey = masterKeys[1];
    MasterCipher masterCipher = new MasterCipher(masterCipherKey, masterMacKey);
    byte[] plaintextKeyMaterial = masterCipher.decodeAndDecrypt(saltAndEncryptedKeyMaterial[1].getBytes());

    boolean saltLengthValid = salt.length == KeyUtil.SALT_LENGTH_BYTES;
    boolean keyMaterialLengthValid = plaintextKeyMaterial.length == (KeyUtil.CIPHER_KEY_LENGTH_BYTES
            + KeyUtil.MAC_KEY_LENGTH_BYTES);

    if (!saltLengthValid || !keyMaterialLengthValid)
        throw new GeneralSecurityException(
                "invalid length on salt or key material >> " + saltLengthValid + " " + keyMaterialLengthValid);

    byte[] plaintextCipherKey = Arrays.copyOfRange(plaintextKeyMaterial, 0, KeyUtil.CIPHER_KEY_LENGTH_BYTES);
    byte[] plaintextMacKey = Arrays.copyOfRange(plaintextKeyMaterial, KeyUtil.CIPHER_KEY_LENGTH_BYTES,
            KeyUtil.CIPHER_KEY_LENGTH_BYTES + KeyUtil.MAC_KEY_LENGTH_BYTES);

    KeyStore.saveEncryptedKeyMaterial(context, saltAndEncryptedKeyMaterial[1]);
    KeyStore.saveKeyMaterialSalt(context, salt);
    KeyStore.saveCipherKey(context, plaintextCipherKey);
    KeyStore.saveMacKey(context, plaintextMacKey);
}

From source file:com.dangdang.ddframe.job.lite.lifecycle.internal.reg.RegistryCenterFactory.java

/**
 * ./*from ww w  .java2s .com*/
 *
 * @param connectString 
 * @param namespace ??
 * @param digest ?
 * @return 
 */
public static CoordinatorRegistryCenter createCoordinatorRegistryCenter(final String connectString,
        final String namespace, final Optional<String> digest) {
    Hasher hasher = Hashing.md5().newHasher().putString(connectString, Charsets.UTF_8).putString(namespace,
            Charsets.UTF_8);
    if (digest.isPresent()) {
        hasher.putString(digest.get(), Charsets.UTF_8);
    }
    HashCode hashCode = hasher.hash();
    CoordinatorRegistryCenter result = REG_CENTER_REGISTRY.get(hashCode);
    if (null != result) {
        return result;
    }
    ZookeeperConfiguration zkConfig = new ZookeeperConfiguration(connectString, namespace);
    if (digest.isPresent()) {
        zkConfig.setDigest(digest.get());
    }
    result = new ZookeeperRegistryCenter(zkConfig);
    result.init();
    REG_CENTER_REGISTRY.put(hashCode, result);
    return result;
}

From source file:google.registry.keyring.api.PgpHelper.java

/**
 * Search for public key on keyring based on a substring (like an email address).
 *
 * @throws VerifyException if the key couldn't be found.
 * @see #lookupKeyPair/*  w ww. j  a  va  2 s  .  c  o m*/
 */
public static PGPPublicKey lookupPublicKey(PGPPublicKeyRingCollection keyring, String query,
        KeyRequirement want) {
    try {
        // Safe by specification.
        @SuppressWarnings("unchecked")
        Iterator<PGPPublicKeyRing> results = keyring.getKeyRings(checkNotNull(query, "query"), true, true);
        verify(results.hasNext(), "No public key found matching substring: %s", query);
        while (results.hasNext()) {
            Optional<PGPPublicKey> result = lookupPublicSubkey(results.next(), want);
            if (result.isPresent()) {
                return result.get();
            }
        }
        throw new VerifyException(
                String.format("No public key (%s) found matching substring: %s", want, query));
    } catch (PGPException e) {
        throw new VerifyException(
                String.format("Public key lookup with query %s failed: %s", query, e.getMessage()));
    }
}

From source file:org.locationtech.geogig.test.integration.remoting.RemotesIndexTestSupport.java

public static List<Ref> getBranches(Repository repo, Optional<String> branch) {
    List<Ref> branches;
    if (branch.isPresent()) {
        Optional<Ref> r = repo.command(RefParse.class).setName(branch.get()).call();
        if (r.isPresent()) {
            branches = Collections.singletonList(r.get());
        } else {//from  www  .j a v a2s.c  o  m
            return Collections.emptyList();
        }
    } else {
        branches = repo.command(BranchListOp.class).call();
    }
    return branches;
}

From source file:net.caseif.flint.steel.util.helper.ChatHelper.java

public static boolean isTeamBarrierPresent(Player sender, Player recipient) {
    Optional<Challenger> senderCh = SteelCore.getChallenger(sender.getUniqueId());
    Optional<Challenger> recipCh = SteelCore.getChallenger(recipient.getUniqueId());

    if (senderCh.isPresent() && recipCh.isPresent()) {
        if (senderCh.get().getRound() == recipCh.get().getRound()) {
            if (senderCh.get().getRound().getConfigValue(ConfigNode.SEPARATE_TEAM_CHATS)) {
                return true;
            }//w w w.j  a  v a 2  s .com
        }
    }
    return false;
}

From source file:net.caseif.flint.steel.util.helper.ChatHelper.java

public static boolean isSpectatorBarrierPresent(Player sender, Player recipient) {
    Optional<Challenger> senderCh = SteelCore.getChallenger(sender.getUniqueId());
    Optional<Challenger> recipCh = SteelCore.getChallenger(recipient.getUniqueId());

    if (senderCh.isPresent()) {
        if (senderCh.get().isSpectating()
                && senderCh.get().getRound().getConfigValue(ConfigNode.WITHHOLD_SPECTATOR_CHAT)) {
            return !(recipCh.isPresent() && recipCh.get().getRound() == senderCh.get().getRound()
                    && recipCh.get().isSpectating());
        }//from   ww  w . j  a va2  s.c om
    }
    return false;
}

From source file:org.eclipse.buildship.ui.view.task.TaskViewContentProvider.java

private static boolean isIncludedProject(Optional<IProject> workspaceProject, OmniEclipseProject modelProject) {
    if (!workspaceProject.isPresent()) {
        return false;
    }//www.j a v  a 2s.c o  m

    Optional<ProjectConfiguration> configuration = CorePlugin.projectConfigurationManager()
            .tryReadProjectConfiguration(workspaceProject.get());
    if (!configuration.isPresent()) {
        return false;
    }

    File projectDirectory = modelProject.getProjectIdentifier().getBuildIdentifier().getRootDir();
    return !projectDirectory.equals(configuration.get().getRootProjectDirectory());
}

From source file:com.voxelplugineering.voxelsniper.sponge.util.SpongeUtilities.java

/**
 * Gets an instance of a Gunsmith {@link Location} corresponding to the given sponge location.
 * //from   ww  w  .j a v  a2  s. co m
 * @param location The location
 * @return The gunsmith location
 */
public static Optional<Location> fromSpongeLocation(org.spongepowered.api.world.Location location,
        WorldRegistry<org.spongepowered.api.world.World> worlds) {
    if (location.getExtent() instanceof World) {
        Optional<World> world = worlds
                .getWorld(((org.spongepowered.api.world.World) location.getExtent()).getName());
        if (!world.isPresent()) {
            return Optional.absent();
        }
        com.flowpowered.math.vector.Vector3d position = location.getPosition();
        return Optional.<Location>of(
                new CommonLocation(world.get(), position.getX(), position.getY(), position.getZ()));
    }
    return Optional.absent();
}

From source file:com.google.errorprone.bugpatterns.threadsafety.GuardedByUtils.java

public static GuardedByValidationResult isGuardedByValid(Tree tree, VisitorState state) {
    String guard = GuardedByUtils.getGuardValue(tree);
    if (guard == null) {
        return GuardedByValidationResult.ok();
    }/*from w ww  . j a  v  a 2s.  c o  m*/

    Optional<GuardedByExpression> boundGuard = GuardedByBinder.bindString(guard,
            GuardedBySymbolResolver.from(tree, state));
    if (!boundGuard.isPresent()) {
        return GuardedByValidationResult.invalid("could not resolve guard");
    }

    Symbol treeSym = ASTHelpers.getSymbol(tree);
    if (treeSym == null) {
        // this shouldn't happen unless the compilation had already failed.
        return GuardedByValidationResult.ok();
    }

    boolean staticGuard = boundGuard.get().kind() == GuardedByExpression.Kind.CLASS_LITERAL
            || (boundGuard.get().sym() != null && boundGuard.get().sym().isStatic());
    if (treeSym.isStatic() && !staticGuard) {
        return GuardedByValidationResult.invalid("static member guarded by instance");
    }

    return GuardedByValidationResult.ok();
}